Is there a function similar to PHP's isset() in Go? -

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in http request, want know if request contains specific parameter, similar php's isset function. how test in go? thanks.

once have parsed request, can check parameter's value type equal type's 0 value.

for example, can use "comma, ok" idiom check query parameters:

u, err := url.parse("http://google.com/search?q=term") if err != nil {     log.fatal(err) } q := u.query() if _, ok := q["q"]; ok {     // process q }

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